I am still the tombow mono Queen. I get it from Penwa.com $1.95 a piece is what it generally comes to. I get coupons from them all the time since I buy so much. Lately DH has been getting it on Amazon for about the same price. Love the stuff!!
I mainly use my ATG guns and buy the refills from Framingsupplies.com. They are the cheapest I've found. Other than that, I'll pick up some mini glue dots whenever Michaels or Hobby Lobby have their adhesives on sale.
I mainly use my ATG. I order either from ScrapbookPal.com ($6.95 for box of 2 rolls with free shipping over $25) or, the last two times, when it's on sale at Joann.com for $6.00 per2 roll box (with $2.99 flat rate shipping; I ordered cardstock and tacky glue too)
I use the Zig 2-Way liquid adhesive. It's wet and it's permanent, so there is not much moving of stuff once I stick it on! It's kinda expensive, but I usually have my 40% off at Michaels. One tube is $7.00 or so. I recently got some off Amazon for a little cheaper, a 3-pack.